JRC JMR-92 Series Field Service Manual page 418

Step 4 Operation check
After having completed the replacement, close the cover, turn On the safety switch and check
operation by following the procedure below.
(1) Turn On the Display unit. After the countdown is completed, start transmission and check
that the radar image appears without error. Transmit the radar wave in the long range
mode and open the service engineer menu to perform tuning adjustment. Perform the
adjustment in the service engineer menu until the tuning display bar on the display unit
reaches the 8th calibration mark.
This completes receiving unit replacement.
Chapter 4 Replacement procedure 4-198